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nuttx/drivers/mmcsd/mmcsd_csd.h
patacongo 53a0d334f2 Fix SD frequency calculation 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1825 42af7a65-404d-4744-a932-0658087f49c3
2009-05-25 21:40:51 +00:00

425 lines
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/****************************************************************************
* drivers/mmcsd/mmcsd_csd.h
*
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __DRIVERS_MMCSD_MMCSD_CSD_H
#define __DRIVERS_MMCSD_MMCSD_CSD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* CSD **********************************************************************/
/* The CSD is a 16 byte, / 128-bit packed structure. The following macros
* can be used to extract each packed field from the CSD. Two types of
* macros are supported, selected by CONFIG_MMCSD_BE16: (1) byte data (with
* MS byte first), or (2) 16-bit big-endian data (with MS hword first).
*/
#ifdef CONFIG_MMCSD_BE16
/* CSD_STRUCTURE 126-127 */
#define MMCSD_CSD_CSDSTRUCT(csd) (csd[0] >> 14)
/* SPEC_VERS 122-125 = (word 0, bits 13:10) (MMC) Spec version */
#define MMC_CSD_SPECVERS(csd) ((csd[0] >> 10) & 0x0f)
/* Reserved 120-125 */
/* TAAC 112-119 = Data read access-time-1
* TIME_VALUE 3-6 = Time mantissa
* TIME_UNIT 0-2 = Time exponent
*/
#define MMCSD_CSD_TAAC_TIMEVALUE(csd) ((csd[0] >> 3) & 0x0f)
#define MMCSD_CSD_TAAC_TIMEUNIT(csd) (csd[0] & 7)
/* NSAC 111:104 = Data read access-time-2 in CLK cycle(NSAC*100) */
#define MMCSD_CSD_NSAC(csd) (csd[1] >> 8)
/* TRAN_SPEED 96-103 = Max. data transfer rate
* TIME_VALUE 3-6 = Rate exponent
* TRANSFER_RATE_UNIT 0-2 = Rate mantissa
*/
#define MMCSD_CSD_TRANSPEED_TIMEVALUE(csd) ((csd[1] >> 3) & 0x0f)
#define MMCSD_CSD_TRANSPEED_TRANSFERRATEUNIT(csd) (csd[1] & 7)
/* CCC 84-95 = Card command classes */
#define MMCSD_CSD_CCC(csd) ((csd[2] >> 4) & 0x0fff)
/* READ_BL_LEN 80-83 = Max. read data block length */
#define MMCSD_CSD_READBLLEN(csd) (csd[2] & 0x0f)
/* READ_BL_PARTIAL 79-79 = Partial blocks for read allowed */
#define MMCSD_CSD_READBLPARTIAL(csd) (csd[3] >> 15)
/* WRITE_BLK_MISALIGN 78-78 = Write block misalignment */
#define MMCSD_CSD_WRITEBLKMISALIN(csd) ((csd[3] >> 14) & 1)
/* READ_BLK_MISALIGN 77:77 = Read block misalignment */
#define MMCSD_CSD_READBLKMISALIN(csd) ((csd[3] >> 13) & 1)
/* DSR_IMP 76-76 = DSR implemented */
#define MMCSD_CSD_DSRIMP(csd) ((csd[3] >> 12) & 1)
/* C_SIZE 62-73 Device size */
#define MMCSD_CSD_CSIZE(csd) (((csd[3] & 0x03ff) << 2) | ((csd[4] >> 14) & 3))
/* VDD_R_CURR_MIN 59-61 = Max. read current at Vcc min */
#define MMCSD_CSD_VDDRCURRMIN(csd) ((csd[4] >> 11) & 7)
/* VDD_R_CURR_MAX 56-58 = Max. read current at Vcc max */
#define MMCSD_CSD_VDDRCURRMAX(csd) ((csd[4] >> 8) & 7)
/* VDD_W_CURR_MIN 53-55 = Max. write current at Vcc min */
#define MMCSD_CSD_VDDWCURRMIN(csd) ((csd[4] >> 5) & 7)
/* VDD_W_CURR_MAX 50-52 = Max. write current at Vcc max */
#define MMCSD_CSD_VDDWCURRMAX(csd) ((csd[4] >> 2) & 7)
/* C_SIZE_MULT 47-49 Device size multiplier */
#define MMCSD_CSD_CSIZEMULT(csd) (((csd[4] & 3) << 1) | (csd[5] >> 15))
/* ER_BLK_EN 46-46 =Erase single block enable (SD) */
#define SD_CSD_SDERBLKEN(csd) ((csd[5] >> 14) & 1)
/* SECTOR_SIZE 39-45 = Erase sector size (SD) */
#define SD_CSD_SECTORSIZE(csd) ((csd[5] >> 7) & 0x7f)
/* SECTOR_SIZE 42-46 = Erase sector size (MMC) */
#define MMC_CSD_SECTORSIZE(csd) ((csd[5] >> 10) & 0x1f)
/* ER_GRP_SIZE 37-41 = Erase group size (MMC)*/
#define MMC_CSD_ERGRPSIZE(csd) ((csd[5] >> 5) & 0x1f)
/* WP_GRP_SIZE 32-38 = Write protect group size (SD) */
#define SD_CSD_WPGRPSIZE(csd) (csd[5] & 0x7f)
/* WP_GRP_SIZE 32-36 = Write protect group size (MMC) */
#define MMC_CSD_WPGRPSIZE(csd) (csd[5] & 0x1f)
/* WP_GRP_EN 31-31 = Write protect group enable */
#define MMCSD_WPGRPEN(csd) (csd[6] >> 15)
/* DFLT_ECC 29-30 = Manufacturer default ECC (MMC) */
#define MMC_CSD_DFLTECC(csd) ((csd[6] >> 13) & 3)
/* R2W_FACTOR 26-28 = Write speed factor */
#define MMCSD_CSD_R2WFACTOR(csd) ((csd[6] >> 10) & 7)
/* WRITE_BL_LEN 22-25 = Max. write data block length */
#define MMCSD_CSD_WRITEBLLEN(csd) ((csd[6] >> 6) & 0x0f)
/* WRITE_BL_PARTIAL 21-21 = Partial blocks for write allowed */
#define MMCSD_CSD_WRITEBLPARTIAL(csd) ((csd[6] >> 5) & 1)
/* Reserved 16-20 */
/* FILE_FORMAT_GROUP 15-15 = File format group */
#define MMCSD_CSD_FILEFORMATGRP(csd) (csd[7] >> 15)
/* COPY 14-14 = Copy flag (OTP) */
#define MMCSD_CSD_COPY(csd) ((csd[7] >> 14) & 1)
/* PERM_WRITE_PROTECT 13-13 = Permanent write protection */
#define MMCSD_CSD_PERMWRITEPROTECT(csd) ((csd[7] >> 13) & 1)
/* TMP_WRITE_PROTECT 12-12 = Temporary write protection */
#define MMCSD_CSD_TMPWRITEPROTECT(csd) ((csd[7] >> 12) & 1)
/* FILE_FORMAT 10-11 = File format */
#define MMCSD_CSD_FILEFORMAT(csd) ((csd[7] >> 10) & 3)
/* ECC 8-9 = ECC (MMC) */
#define MMC_CSD_ECC(csd) ((csd[7] >> 8) & 3)
/* CRC 1-7 = CRC */
#define MMCSD_CSD_CRC(csd) ((csd[7] >> 1) & 0x7f)
/* Reserved 0-0 */
#else /* CONFIG_MMCSD_BE16 */
/* CSD_STRUCTURE 126-127 */
#define MMCSD_CSD_CSDSTRUCT(csd) (csd[0] >> 6)
/* SPEC_VERS 122-125 = (word 0, bits 13:10) (MMC) Spec version */
#define MMC_CSD_SPECVERS(csd) ((csd[0] >> 2) & 0x0f)
/* Reserved 120-155 */
/* TAAC 112-119 = Data read access-time-1
* TIME_VALUE 3-6 = Time mantissa
* TIME_UNIT 0-2 = Time exponent
*/
#define MMCSD_CSD_TAAC_TIMEVALUE(csd) ((csd[1] >> 3) & 0x0f)
#define MMCSD_CSD_TAAC_TIMEUNIT(csd) (csd[1] & 7)
#define SD20_CSD_TAC_TIMEVALUE(csd) (1)
#define SD20_CSD_TAC_TIMEUNIT(csd) (6)
/* NSAC 111:104 = Data read access-time-2 in CLK cycle(NSAC*100) */
#define MMCSD_CSD_NSAC(csd) (csd[2])
#define SD20_CSD_NSAC(csd) (0)
/* TRAN_SPEED 96-103 = Max. data transfer rate
* TIME_VALUE 3-6 = Rate exponent
* TRANSFER_RATE_UNIT 0-2 = Rate mantissa
*/
#define MMCSD_CSD_TRANSPEED_TIMEVALUE(csd) ((csd[3] >> 3) & 0x0f)
#define MMCSD_CSD_TRANSPEED_TRANSFERRATEUNIT(csd) (csd[3] & 7)
#define SD20_CSD_TRANSPEED_TIMEVALUE(csd) MMCSD_CSD_TRANSPEED_TIMEVALUE(csd)
#define SD20_CSD_TRANSPEED_TRANSFERRATEUNIT(csd) MMCSD_CSD_TRANSPEED_TRANSFERRATEUNIT(csd)
/* CCC 84-95 = Card command classes */
#define MMCSD_CSD_CCC(csd) (((uint16)csd[4] << 4) | ((uint16)csd[5] >> 4))
#define SD20_CSD_CCC(csd) MMCSD_CSD_CCC(csd)
/* READ_BL_LEN 80-83 = Max. read data block length */
#define MMCSD_CSD_READBLLEN(csd) (csd[5] & 0x0f)
#define SD20_CSD_READBLLEN(csd) (9)
/* READ_BL_PARTIAL 79-79 = Partial blocks for read allowed */
#define MMCSD_CSD_READBLPARTIAL(csd) (csd[6] >> 7)
#define SD20_CSD_READBLPARTIAL(csd) (0)
/* WRITE_BLK_MISALIGN 78-78 = Write block misalignment */
#define MMCSD_CSD_WRITEBLKMISALIGN(csd) ((csd[6] >> 6) & 1)
#define SD20_CSD_WRITEBLKMISALIGN(csd) (0)
/* READ_BLK_MISALIGN 77:77 = Read block misalignment */
#define MMCSD_CSD_READBLKMISALIGN(csd) ((csd[6] >> 5) & 1)
#define SD20_CSD_READBLKMISALIGN(csd) (0)
/* DSR_IMP 76-76 = DSR implemented */
#define MMCSD_CSD_DSRIMP(csd) ((csd[6] >> 4) & 1)
#define SD20_CSD_DSRIMP(csd) MMCSD_CSD_DSRIMP(csd)
/* C_SIZE 62-73 Device size */
#define MMCSD_CSD_CSIZE(csd) (((csd[6] & 3) << 10) | (csd[7] << 2) | (csd[8] >> 6))
#define SD20_CSD_CSIZE(csd) (((csd[7] & 0x3f) << 16) | (csd[8] << 8) | csd[9])
/* VDD_R_CURR_MIN 59-61 = Max. read current at Vcc min */
#define MMCSD_CSD_VDDRCURRMIN(csd) ((csd[8] >> 3) & 7)
#define SD20_CSD_VDDRCURRMIN(csd) (7)
/* VDD_R_CURR_MAX 56-58 = Max. read current at Vcc max */
#define MMCSD_CSD_VDDRCURRMAX(csd) (csd[8] & 7)
#define SD20_CSD_VDDRCURRMAX(csd) (6)
/* VDD_W_CURR_MIN 53-55 = Max. write current at Vcc min */
#define MMCSD_CSD_VDDWCURRMIN(csd) ((csd[9] >> 5) & 7)
#define SD20_CSD_VDDWCURRMIN(csd) (7)
/* VDD_W_CURR_MAX 50-52 = Max. write current at Vcc max */
#define MMCSD_CSD_VDDWCURRMAX(csd) ((csd[9] >> 2) & 7)
#define SD20_CSD_VDDWCURRMAX(csd) (6)
/* C_SIZE_MULT 47-49 Device size multiplier */
#define MMCSD_CSD_CSIZEMULT(csd) (((csd[9] & 3) << 1) | (csd[10] >> 7))
#define SD20_CSD_CSIZEMULT(csd) (10-2)
/* ER_BLK_EN 46-46 = Erase single block enable (SD) */
#define SD_CSD_SDERBLKEN(csd) ((csd[10] >> 6) & 1)
#define SD20_CSD_SDERBLKEN(csd) (1)
/* SECTOR_SIZE 39-45 = Erase sector size (SD) */
#define SD_CSD_SECTORSIZE(csd) (((csd[10] & 0x3f) << 1) | (csd[11] >> 7))
#define SD20_CSD_SECTORSIZE(csd) (0x7f)
/* SECTOR_SIZE 42-46 = Erase sector size (MMC) */
#define MMC_CSD_SECTORSIZE(csd) ((csd[10] >> 2) & 0x1f)
/* ER_GRP_SIZE 37-41 = Erase group size (MMC)*/
#define MMC_CSD_ERGRPSIZE(csd) (((csd[10] & 3) << 3) | (csd[11] > 5))
/* WP_GRP_SIZE 32-38 = Write protect group size (SD) */
#define SD_CSD_WPGRPSIZE(csd) (csd[11] & 0x7f)
#define SD20_CSD_WPGRPSIZE(csd) (0)
/* WP_GRP_SIZE 32-36 = Write protect group size (MMC) */
#define MMC_CSD_WPGRPSIZE(csd) (csd[11] & 0x1f)
/* WP_GRP_EN 31-31 = Write protect group enable */
#define MMCSD_WPGRPEN(csd) (csd[12] >> 7)
#define SD20_WPGRPEN(csd) (0)
/* DFLT_ECC 29-30 = Manufacturer default ECC (MMC) */
#define MMC_CSD_DFLTECC(csd) ((csd[12] >> 5) & 3)
/* R2W_FACTOR 26-28 = Write speed factor */
#define MMCSD_CSD_R2WFACTOR(csd) ((csd[12] >> 2) & 7)
#define SD20_CSD_R2WFACTOR(csd) (2)
/* WRITE_BL_LEN 22-25 = Max. write data block length */
#define MMCSD_CSD_WRITEBLLEN(csd) (((csd[12] & 3) << 2) | (csd[13] >> 6))
#define SD20_CSD_WRITEBLLEN(csd) (9)
/* WRITE_BL_PARTIAL 21-21 = Partial blocks for write allowed */
#define MMCSD_CSD_WRITEBLPARTIAL(csd) ((csd[13] >> 5) & 1)
#define SD20_CSD_WRITEBLPARTIAL(csd) (0)
/* Reserved 16-20 */
/* FILE_FORMAT_GROUP 15-15 = File format group */
#define MMCSD_CSD_FILEFORMATGRP(csd) (csd[14] >> 7)
#define SD20_CSD_FILEFORMATGRP(csd) (0)
/* COPY 14-14 = Copy flag (OTP) */
#define MMCSD_CSD_COPY(csd) ((csd[14] >> 6) & 1)
#define SD20_CSD_COPY(csd) MMCSD_CSD_COPY(csd)
/* PERM_WRITE_PROTECT 13-13 = Permanent write protection */
#define MMCSD_CSD_PERMWRITEPROTECT(csd) ((csd[14] >> 5) & 1)
#define SD20_CSD_PERMWRITEPROTECT(csd) MMCSD_CSD_PERMWRITEPROTECT(csd)
/* TMP_WRITE_PROTECT 12-12 = Temporary write protection */
#define MMCSD_CSD_TMPWRITEPROTECT(csd) ((csd[14] >> 4) & 1)
#define SD20_CSD_TMPWRITEPROTECT(csd) MMCSD_CSD_TMPWRITEPROTECT(csd)
/* FILE_FORMAT 10-11 = File format */
#define MMCSD_CSD_FILEFORMAT(csd) ((csd[14] >> 2) & 3)
#define SD20_CSD_FILEFORMAT(csd) (0)
/* ECC 8-9 = ECC (MMC) */
#define MMC_CSD_ECC(csd) (csd[14] & 3)
/* CRC 1-7 = CRC */
#define MMCSD_CSD_CRC(csd) (csd[15] >> 1)
#define SD20_CSD_CRC(csd) MMCSD_CSD_CRC(csd)
/* Reserved 0-0 */
#endif /* CONFIG_MMCSD_BE16 */
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __DRIVERS_MMCSD_MMCSD_CSD_H */
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